Question: "What is the topic of history in Sierra Leone, that has a License plate code WAL ?
Paraphrase: "What is the subject of history in Sierra Leone, that features a Permit plate code WAL ?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q1477561 wdt:P1269 ?answer . ?answer wdt:P395 ?x FILTER(contains(?x , 'WAL'))}